SB2026111245 - Heap-based buffer overflow in CE/EE
Published: November 12, 2026
Security Bulletin ID
SB2026111245
CSH Severity
High
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Code execution
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Heap-based buffer overflow (CVE-ID: CVE-2026-105437)
CWE-ID: CWE-122 - Heap-based Buffer Overflow
CVSSv4: 9.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
The vulnerability allows a remote attacker to potentially execute arbitrary commands within GitLab's Gitaly environment.
The vulnerability exists due to a heap-based buffer overflow in Git bundled with GitLab when processing input under certain conditions. A remote attacker can supply specially crafted input to trigger out-of-bounds heap writes that may enable arbitrary command execution within GitLab's Gitaly environment.
Remediation
Install update from vendor's website.